Can an iphone 5 get viruses from websites?

I want true answers please

Extremely unlikely, Apple's products have their own security built in, however I'm not sure if this includes iphones.

Yes they can, my iPhone got a virus and the guy said he had to restart everything and delete everything.

If a site need to install activeX or some java equipments then it can be a virus.

No, iphones are extremely safe and you don't need to run antiviurs on them like other phones have to do. You can only install on it via appstore, which is great because all code is reviewed first there so you can install as much as you want without concerns on whether its a virus or not. (I'm assuming you did not jailbreak it, because then you lose some of that security).

It isn't likely, but yes, the iPhone 5 can get a virus from a website.

No it can't, the only time when an IPhone was able to execute scripts from a website was back in IOS 4.3.3 and was exploited to jailbreak your IPhone in Safari, right now neither the Sandbox allows Safari to run neither Scripts nor shells from websites, this is what the website SAID BACK in IOS 4.3.3, remember there's no way to run a script in IOS 6 <

"Isn't there a risk hackers will make the exploit from this site into an iPhone virus?

When I released JailbreakMe 2.0 in may 2011, some media reports focused on the security implications of releasing an exploit for unpatched vulnerabilities. I'm not sure myself what to think of this, but here are some facts:
▻ I did not create the vulnerabilities, only discover them. Releasing an exploit demonstrates the flaw, making it easier for others to use it for malice, but they have long been present and exploitable. Although releasing a jailbreak is certainly not the usual way to report a vulnerability, it still has the effect of making iOS more secure in the long run.

▻ There's always a first time, but I think there's a good chance the security impact of these vulnerabilities will remain theoretical. Despite JailbreakMe 2.0 being open sourced after an updated version of iOS was released, which would have made it relatively easy to modify the code into an attack, I didn't hear about any such modification except a proof of concept that showed up much later. The only iPhone virus ever to attack the general public was a trivial one that affected jailbreakers who installed OpenSSH (not installed by default) but left it at the default password.

▻ Along with the jailbreak, I'm releasing a patch for the main vulnerability which anyone especially security conscious can install to render themselves immune; due to the nature of iOS, this patch can only be installed on a jailbroken device. Until Apple releases an update, jailbreaking will ironically be the best way to remain secure.

▻ Jailbreak apps and tweaks improve the mobile experience of millions of users, including many who were encourged to try it by the ease of use of web-based jailbreaks. I'm not just doing this to be flashy: there's considerable benefit to writing this kind of tool rather than one that requires a connected computer."